Friday, January 31, 2014

Heart Murmurs


Physiology:
  • Split S2 - it sounds like a normal heart beat with a sort of solid drum beat and can be heard clearly. The difference is there is no second beat heard and this is caused by respiration. 
  • Venous - the audio appears to sound like slow beats like that from a horse's hooves. There is a raspy sound in the background as well and is caused by turbulence in the jugular veins, usually found in children due to narrow veins under the collarbone.
Systolic:
  • Pulmonary Stenosis - there is an obvious raspy sound with the heart beat, almost sounding like a suction cup or the noise you hear when you get water in your ears. Possibly there is some fluid caught inside the lungs and surrounding areas.
  • Late Aortic Stenosis - has a sort of suction cup effect or even sounds like a force pump of something. This is caused when the aortic valve becomes more narrow and the left ventricle has to increase pressure to pump blood out through the valve.
Diastolic
  • Aortic Regurgitation - reminds me of a techno song beat or a ball bouncing on industrial aluminum sheets. It is clear enough to hear but obviously not the best heart murmur to have. This murmur is produced as the blood flows retrograde back into the left ventricle.
  • Mitral Stenosis - there is a crackling sound in between beats and while it may just be the audio, if it isn't then that sure isn't good. There also seems to be a delay in the beats. The main cause of mitral stenosis is an infection called rheumatic fever, which is related to strep infections.   
Rubs, Gallops and Continuous:
  • Friction Rubs - sounds very murky and like a wave hitting the shore. This is caused by the beating of the heart against an inflamed pericardium or lung pleura 
  • Patent Ductus Arteriosis - reminds me of what you hear when you go underwater in a pool. Sounds murky with every beat as well. The cause of patent ductus arteriosus isn't known.Genetics may play a role in causing the condition. A defect in one or more genes might prevent the ductus arteriosus from closing after birth. 
 Lungs:
  • Normal - sounds like a normal beat except with a bit of a trill at the end each time. There may be some fluid inside, but otherwise sounds like breathing and heartbeats. 
  • Wheezing - sounds like a stomach growling, or like a balloon deflating. The person must have a hard time breathing with some fluid inside their lungs. This could be from bronchitis or even pneumonia.

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